Spring tension for power or hand pumps



C. F. BRANDENBERGER.

SPRING TENSION FOR POWER 0R HAND PUMPS.

APPLICATION FILED FEB. 12, 1919.

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CARL F. BRANDENBERGER, OF FOB/T MADISON, IOWA.

SPRING TENSION FOR POWER OR HAND PUMPS. I

Specification of Letters Patent.

Patented Aug. 3, 1920.

Application filed February 12, 1919. Serial No. 276,541.

To all whom it may concern:

.Be it known that I, CARL F. BRANDEN- BERGER, a citizen of the UnitedStates, residing at Fort Madison, in the county of Lee and State ofIowa, have invented a new and useful Spring Tension for Power or HandPumps, of which the following is a specification.

It is the object of this invention to provide novel means wherebystrains on a pump rod will be avoided. 1

WVhen a windmill is operated at a high speed the water. is frequentlyforced into the supply pipe faster than it can escape therefrom and oneobject of the invention is to provide aspring tension device which willact as a governor, in that thestroke will shorten, as the speed and asthe load increase.

Within the scope of what is claimed, a mechanic can make changes,without departing from the spirit of the invention.

In the drawings Figure 1 shows in longitudinal section, a deviceconstructed in accordance with the invention; Fig. 2 is a cross sectionon the line 22 of Fig. 1; Fig. 3 is a cross section on the line 3-3 ofFig. 1; Fi 4: is a cross section on the line 4-4 of Fig. 1; and Fig. 5is an elevation showing a modification, parts being broken away.

The invention comprises a tubular casing 1, bifurcated at its upper endto form arms 2 which are trough-shaped in cross section. The lower endof one part 3 of a pump rod is received between the arms 2 and is heldtherebetween by bolts 10 or the like. A cap 5 is threaded on the lowerend of the casing 1, a plunger 6 being mounted to reciprocate in the capand being provided at its upper end with a head 7 A compression spring 8surrounds a portion of the plunger 6, within the. casing 1, one end ofthe spring abutting against the head 7 and the other end of the springabutting against the cap 5. A socket 9 is threaded on the lower end ofthe plunger 6 and limits the upward movement of the plunger under theaction of the spring 8, the sockethaving arms 10 terminating in a ring11 in which is received another part 12 of the as shown at 20, tofacilitate the insertion of the tongue through the projection 17 and theears 18. When the pin 14 is in place,

the tongue 16 will swing into, a depending position and hold the end 14in place against withdrawal. ()n the upstroke, the spring 8 will becompressed, and on the down stroke, the spring will expand, the plunger6 sliding in the. cap 5 during the operation above mentioned. Theconstruction, obviously, is such that sudden strains on the pump rodwill be avoided. The device is adapted to be used on a pump rod of anykind, whether the pump be operated by a wind mill, by a hand lever orotherwise.

In case it should be necessary to mount the device relatively close tothe pump, at which location, a rod of circular cross section is likelyto be encountered, then recourse is had to the structure shown in Fig.5, wherein parts hereinbefore described have been designated by numeralsreviously used, with the suffix a. In ig. 5, a collar 21 is threaded onthe upper end of the casing 1 and carries a reducer 22 receiving onepart .23 of the pump rod. A socket 9 is threaded on the lower end of theplunger 6 and receives the lower part 25 of the pump rod. 7 Having thusdescribed the invention, what is claimed is:x i r In a device of theclass described, a cylindrical casing; a cap threaded on one end of thecasing; a plunger slidable in the cap and providedat its inner end witha head located in the casing; a socket threaded on the outer end of theplunger and having spaced lower arms; a compression spring surroundingthe plunger within the casing and abutting at its ends against the capand the, head, the spring serving to hold the socket normally inengagement with the cap, the up er end of the casing being en- Intestimony that I claim the foregoing larged and tapered to facilitatethe inseras my own, I have hereto afiixeol my sig- 10 tion of theplunger and the head into the nature in the presence of tWo Witnesses.

casing and being bifurcated to form upper arms which are trough-shapedin cross CARL F. BRANDENBERGER. section; a connecting element unitingthe 'Witnesses: upper arms; and a connecting element unit- H. A.Signing,

ing the lower arms. p F. C. CHAMBERS.

